maria-discuss team mailing list archive

[Roberto Spadim <roberto@xxxxxxxxxxxxx>]

maybe check if it's a BIT type at sql_load.cc and cast to bigint unsigned
before field->store ? i think it's the easier patch, i don't know
i tryed any kind of file
the bit column only with with "SET bit_column=@some_variable+0" or anything
to cast from "string" to "integers"

2015-11-02 22:40 GMT-02:00 Roberto Spadim <roberto@xxxxxxxxxxxxx>:

> probably something here:
> https://github.com/MariaDB/server/blob/10.1/sql/field.cc#L9127
>
> 2015-11-02 22:28 GMT-02:00 Roberto Spadim <roberto@xxxxxxxxxxxxx>:
>
>> hi justing, but i always get 1
>> even when data file have "0" (character "0") at line
>>
>> i'm reading the load data file:
>>
>> https://github.com/MariaDB/server/blob/e19a6f3dca7509eb8e042796a9311dba937ad9d7/sql/sql_load.cc#L853
>> that's something with field->store (i think)
>> field->store((char*) pos,length,read_info.read_charset);
>>
>> https://github.com/MariaDB/server/blob/e19a6f3dca7509eb8e042796a9311dba937ad9d7/sql/sql_load.cc#L1025
>> field->store((char*) pos, length, read_info.read_charset);i didn't
>> checked yet store of bit field type
>>
>>
>>
>>
>>
>>
>> 2015-11-02 22:15 GMT-02:00 Justin Swanhart <greenlion@xxxxxxxxx>:
>>
>>> Hi,
>>>
>>> Instead of using b'...' notation, use bitwise math to get the integer
>>> representation of the bitset, and place that in your loader file.
>>>
>>> For example:
>>> select 1 | 2 | 8;  ---> 11
>>>
>>> Put 11 in your data file and you will get bits 1 2 and 8 set in your
>>> bitset.
>>>
>>> --Justin
>>>
>>> On Mon, Nov 2, 2015 at 4:52 PM, Roberto Spadim <roberto@xxxxxxxxxxxxx>
>>> wrote:
>>>
>>>> sorry found at mysql docs
>>>>
>>>> BIT <https://dev.mysql.com/doc/refman/5.7/en/bit-type.html> values
>>>> cannot be loaded using binary notation (for example, b'011010'). To
>>>> work around this, specify the values as regular integers and use the
>>>> SET clause to convert them so that MySQL performs a numeric type
>>>> conversion and loads them into the BIT
>>>> <https://dev.mysql.com/doc/refman/5.7/en/bit-type.html> column
>>>> properly:
>>>>
>>>>  <https://dev.mysql.com/doc/refman/5.7/en/load-data.html>
>>>> shell> *cat /tmp/bit_test.txt*
>>>> 2
>>>> 127
>>>> shell> *mysql test*
>>>> mysql> *LOAD DATA INFILE '/tmp/bit_test.txt'*
>>>>     -> *INTO TABLE bit_test (@var1) SET b = CAST(@var1 AS UNSIGNED);*
>>>> Query OK, 2 rows affected (0.00 sec)
>>>> Records: 2  Deleted: 0  Skipped: 0  Warnings: 0
>>>>
>>>>
>>>> but i'm checking something very bad
>>>> if i execute without "SET" a big file take 1second, with "SET" it takes
>>>> 3 times more
>>>> maybe we could include the bit cast at load data infile and solve this
>>>> problem? maybe a mariadb improvement?
>>>>
>>>>
>>>> 2015-11-02 21:43 GMT-02:00 Roberto Spadim <roberto@xxxxxxxxxxxxx>:
>>>>
>>>>> hi guys, how could i send bit data to mysql with LOAD FILE?
>>>>>
>>>>> a table example:
>>>>> create table t (i bit not null default 0);
>>>>>
>>>>> LOAD DATA LOCAL INFILE "file.csv" IGNORE INTO TABLE `t` FIELDS
>>>>> TERMINATED BY ';' LINES TERMINATED BY '\n' (i)
>>>>>
>>>>>
>>>>> the data file is simple:
>>>>>
>>>>> 0
>>>>> 1
>>>>> 0
>>>>> 1
>>>>> 0
>>>>> 1
>>>>>
>>>>> but i got Warning 1024: Out of range value for column 'i' at row 1 ...
>>>>> to last row
>>>>>
>>>>> any idea? i tried
>>>>> b'0'
>>>>> b'1'
>>>>> '0'
>>>>> '1'
>>>>> 0
>>>>> 1
>>>>> but no one work, i don't know what happen but it's cast always to 1
>>>>>  (maybe convert from string to binary?)
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Roberto Spadim
>>>> SPAEmpresarial - Software ERP
>>>> Eng. Automação e Controle
>>>>
>>>> _______________________________________________
>>>> Mailing list: https://launchpad.net/~maria-discuss
>>>> Post to     : maria-discuss@xxxxxxxxxxxxxxxxxxx
>>>> Unsubscribe : https://launchpad.net/~maria-discuss
>>>> More help   : https://help.launchpad.net/ListHelp
>>>>
>>>>
>>>
>>
>>
>> --
>> Roberto Spadim
>> SPAEmpresarial - Software ERP
>> Eng. Automação e Controle
>>
>
>
>
> --
> Roberto Spadim
> SPAEmpresarial - Software ERP
> Eng. Automação e Controle
>



-- 
Roberto Spadim
SPAEmpresarial - Software ERP
Eng. Automação e Controle